Search for flavour-changing neutral current top-quark decays to q Z in pp collision data collected with the ATLAS detector at √s = 8 TeV
A search for the flavour-changing neutral-current decay t→qZ is presented. Data collected by the ATLAS detector during 2012 from proton–proton collisions at the Large Hadron Collider at a centre-of-mass energy of s√=8 TeV, corresponding to an integrated luminosity of 20.3 fb[superscript −1], are...
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| Format: | Article |
| Language: | en_US |
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Springer-Verlag
2017
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| Online Access: | http://hdl.handle.net/1721.1/106525 https://orcid.org/0000-0002-7586-7253 |
| _version_ | 1811087202164146176 |
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| author | Taylor, Frank E |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Taylor, Frank E |
| author_sort | Taylor, Frank E |
| collection | MIT |
| description | A search for the flavour-changing neutral-current decay t→qZ is presented. Data collected by the ATLAS detector during 2012 from proton–proton collisions at the Large Hadron Collider at a centre-of-mass energy of s√=8 TeV, corresponding to an integrated luminosity of 20.3 fb[superscript −1], are analysed. Top-quark pair-production events with one top quark decaying through the t→qZ (q=u,c) channel and the other through the dominant Standard Model mode t→bW are considered as signal. Only the decays of the Z boson to charged leptons and leptonic W boson decays are used. No evidence for a signal is found and an observed (expected) upper limit on the t→qZ branching ratio of 7×10[superscript −4] (8×10[superscript −4]) is set at the 95 % confidence level |
| first_indexed | 2024-09-23T13:41:41Z |
| format | Article |
| id | mit-1721.1/106525 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:41:41Z |
| publishDate | 2017 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/1065252022-09-28T15:36:35Z Search for flavour-changing neutral current top-quark decays to q Z in pp collision data collected with the ATLAS detector at √s = 8 TeV Taylor, Frank E Massachusetts Institute of Technology. Department of Physics Taylor, Frank E A search for the flavour-changing neutral-current decay t→qZ is presented. Data collected by the ATLAS detector during 2012 from proton–proton collisions at the Large Hadron Collider at a centre-of-mass energy of s√=8 TeV, corresponding to an integrated luminosity of 20.3 fb[superscript −1], are analysed. Top-quark pair-production events with one top quark decaying through the t→qZ (q=u,c) channel and the other through the dominant Standard Model mode t→bW are considered as signal. Only the decays of the Z boson to charged leptons and leptonic W boson decays are used. No evidence for a signal is found and an observed (expected) upper limit on the t→qZ branching ratio of 7×10[superscript −4] (8×10[superscript −4]) is set at the 95 % confidence level United States. Dept. of Energy National Science Foundation (U.S.) Brookhaven National Laboratory 2017-01-18T16:27:56Z 2017-01-18T16:27:56Z 2016-01 2015-08 Article http://purl.org/eprint/type/JournalArticle 1434-6044 1434-6052 http://hdl.handle.net/1721.1/106525 ATLAS Collaboration et al. “Search for Flavour-Changing Neutral Current Top-Quark Decays to QZ in PP Collision Data Collected with the ATLAS Detector at √s = 8 TeV.” The European Physical Journal C 76.1 (2016): n. pag. © 2016 CERN for the benefit of the ATLAS collaboration https://orcid.org/0000-0002-7586-7253 en_US http://dx.doi.org/10.1140/epjc/s10052-015-3851-5 The European Physical Journal C Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Springer-Verlag Springer |
| spellingShingle | Taylor, Frank E Search for flavour-changing neutral current top-quark decays to q Z in pp collision data collected with the ATLAS detector at √s = 8 TeV |
| title | Search for flavour-changing neutral current top-quark decays to q Z in pp collision data collected with the ATLAS detector at √s = 8 TeV |
| title_full | Search for flavour-changing neutral current top-quark decays to q Z in pp collision data collected with the ATLAS detector at √s = 8 TeV |
| title_fullStr | Search for flavour-changing neutral current top-quark decays to q Z in pp collision data collected with the ATLAS detector at √s = 8 TeV |
| title_full_unstemmed | Search for flavour-changing neutral current top-quark decays to q Z in pp collision data collected with the ATLAS detector at √s = 8 TeV |
| title_short | Search for flavour-changing neutral current top-quark decays to q Z in pp collision data collected with the ATLAS detector at √s = 8 TeV |
| title_sort | search for flavour changing neutral current top quark decays to q z in pp collision data collected with the atlas detector at √s 8 tev |
| url | http://hdl.handle.net/1721.1/106525 https://orcid.org/0000-0002-7586-7253 |
| work_keys_str_mv | AT taylorfranke searchforflavourchangingneutralcurrenttopquarkdecaystoqzinppcollisiondatacollectedwiththeatlasdetectorats8tev |